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Hot water is provided to a house by an electric water heater which uses a 60L tank. The electric heater is rated for a 1.6kW. The hot water tank is completely full with water at 80°C when someone starts a shower. The shower faucet mixes cold water at 20°C and a flow rate of 0.06kg/s with hot water at an unknown flow rate from the water heater. After an 8min shower period, the water in the hot water heater has dropped to a temperature of 60°C. The heater ran continuously during the shower period and drew in cold water at 20°C at the same rate as hot water left it. What was the mass of hot water withdrawn from the tank?
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A condition exists where it is necessary to cool and dehumidify air from 80°F db, 67°F wb to 60°db, and 54°F wb. Discuss the feasibility of doing this in one process with a cooling coil
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An Industrial water shutoff valve is designed to operate with 40lbs of force and will encounter 150lbs of resistance force applied to a 2in diameter axle. What is the required actual mechanical advantage of the system?
a water storage tank initially contains 100000 gal of water. the average daily usage is 10000 gal. if water is added to
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